Maintenance Level:After every 5 flights and before and after storing airplane, please check all control surface horns and tighten the screws on surface horns if needed. Check the control pushrod clevis to insure no cracks are visible and no clevis has come loose. Check all control surfaces for solid contact between control surfaces, main wings and tail sections. Check for any loose screws anywhere screws are located. Check all wires connecting to the receiver for soild connection.